Just these 2 plz:) I need it soon im making up hw.

1. A

2. 29.5

Step-by-step explanation:

1. 30% as a decimal is 0.3, times that by 28 and that would give you the discounted amount of 8.4

2. 18% as a decimal is 0.18, times that by 25 is 4.5, then add it to 25 and it's 29.5

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the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.